SOLUTION: An urn contains 7 red marbles, 6 white marbles and 10 blue marbles. A child randomly selects three (without replacement).
Find the probability all have the same color.
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Find the probability all have the same color.
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Question 1200326: An urn contains 7 red marbles, 6 white marbles and 10 blue marbles. A child randomly selects three (without replacement).
Find the probability all have the same color.
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An urn contains 7 red marbles, 6 white marbles and 10 blue marbles.
A child randomly selects three (without replacement).
(a) Find the probability all have the same color.
(b) Find the probability that none is white.
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(a) Total possible triples = = = 1771.
Triples of the same color + + = 35 + 20 + 120 = 175.
P(a) = = 0.09881 (rounded). ANSWER
(b) P(b) = = = = 0.3840 (rounded). ANSWER
